01 - In a large pot or Dutch oven, heat 1 tablespoon olive oil over medium heat. Add the chicken pieces and sauté for 3–4 minutes, until just cooked through. Remove chicken and set aside.
02 - Add a little more oil if needed, then add onion, carrots, and celery. Cook for 5 minutes, stirring occasionally, until softened.
03 - Stir in garlic and cook for 1 minute, until fragrant.
04 - Add potatoes, green beans, corn, chicken broth, bay leaf, thyme, parsley, black pepper, and salt. Bring to a boil.
05 - Reduce heat to a simmer, cover, and cook for 15 minutes, until vegetables are tender.
06 - Return the cooked chicken to the pot and simmer for another 5 minutes, until heated through.
07 - Remove the bay leaf. Taste and adjust seasoning as needed.
08 - Ladle into bowls, garnish with fresh parsley and a squeeze of lemon juice if desired. Serve hot.